Texas's 8th congressional district of the United States House of Representatives includes all of Walker, Montgomery and San Jacinto counties, and parts of Harris County. It includes much of the northern outlying areas of metro Houston, including Conroe, Magnolia, and most of Lake Livingston. The current Representative from the 8th district is Morgan Luttrell and has been since 2023.

Walker County is a county located in the east central section of the U.S. state of Texas. As of the 2020 census, its population was 76,400. Its county seat is Huntsville. Initially, Walker County was named for Robert J. Walker, a legislator from Mississippi who introduced into the United States Congress the resolution to annex Texas. Walker later supported the U.S. during its Civil War and earned some enmity for it. In order to keep the county's name, the state renamed it for Samuel H. Walker, a Texas Ranger and soldier in the United States Army.